I have decided to buy a car for myself. I want to buy a affordable used car.. I dont know how to start this search. Do i need to search in the internet? Going to nearby showroom is good or is there any other thing that we can do..If looking through the net is a way, can anybody please suggest me some websites where we can search? This is my first time so i have no any idea. What are the things that we should keep in mind when buying a used car?

Thanks